Given:
Rewards for signing up is 20 points.
Reward for each visit to theater is 2.5 points.
Minimum required points to earn a free ticket is 40 points.
Here the reward for signing up is fixed points. But the reward point for visiting each theater varies depends on the number of visits.
Consider the number of visits as v.
Then, the above situation can be expressed in the form of linear equation as,

Hence, the required equation of inequality is obtained.
On solving for v,

Hence, Nolan should make atleast 8 visit to theater to earn his first free movie ticket.